Check Power Supply And Ground Circuit

• Check fuses for blown-out.
  FUSES SPECIFICATION
  
  

  Unit	Power source	Fuse and fusible link No.
  BCM	Battery	F
  		18
  	Ignition switch ON or START position	1
  	Ignition switch ACC or ON position	6
  IPDM E/R	Battery	72
  		74
  		76
  		86

Refer to WIRING DIAGRAM - AUTO/L - .

OK or NG

1. OK: GO TO 2.
2. NG: If fuse is blown, be sure to eliminate cause of malfunction before installing new fuse. Refer to POWER SUPPLY ROUTING CIRCUIT .

1. Turn ignition switch OFF.
2. Disconnect BCM connector.
3. Check voltage between BCM harness connector and ground.
   TERMINAL VOLTAGE SPECIFICATION
   
   

   Terminals			Ignition switch position
   (+)		(-)	OFF	ACC	ON
   Connector	Terminal (Wire color)
   M1	11 (LG)	Ground	0V	Battery voltage	Battery voltage
   	38 (W/L)		0V	0V	Battery voltage
   M4	42 (GY)		Battery voltage	Battery voltage	Battery voltage
   	55 (W/R)		Battery voltage	Battery voltage	Battery voltage

OK or NG

1. OK: GO TO 3.
2. NG: Check harness for open or short between BCM and fuse.
   Fig 1: Checking Voltage Between BCM Harness Connector And Ground

   Courtesy of NISSAN MOTOR CO., U.S.A.

Check continuity between BCM harness connector and ground.

OK or NG

1. OK: INSPECTION END
2. NG: Check ground circuit harness.
   Fig 2: Checking Continuity Between BCM Harness Connector And Ground

   Courtesy of NISSAN MOTOR CO., U.S.A.